import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import GoodsList from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'



Vue.use(VueRouter)

const routes = [
    //路由重定向 this.$router.push('/login')也是
    { path: '/', redirect: '/login' },
    //路由规则
    { path: '/login', component: Login },
    {
        path: '/home',
        component: Home,
        redirect: '/welcome', //路由重定向
        children: [
            { path: '/welcome', component: Welcome },
            { path: '/users', component: Users },
            { path: '/rights', component: Rights },
            { path: '/roles', component: Roles },
            { path: '/categories', component: Cate },
            { path: '/params', component: Params },
            { path: '/goods', component: GoodsList },
            { path: '/goods/add',component:Add },
            { path: '/orders',component:Order },
            {path:  '/reports',component:Report }
        ]
    }
]

const router = new VueRouter({
    routes
})

// 为路由对象，添加beforeEach(()=>{})导航守卫
router.beforeEach((to, from, next) => {
    // to 将访问哪一个路径
    // from 代表从哪个路径跳转而来
    // next 是一个函数,表示放行
    //   next() 放行 next('/login') 强制跳转
    if (to.path === '/login') return next()
        // 获取token window.sessionStorage.getItem('token')看有无token
    const token = window.sessionStorage.getItem('token')
    if (!token) return next('/login')
    next()
})

export default router